Balancing MPEG Transcoding with Storage in Multiple-Quality Video-on-Demand Services
Minseok Song, Jeong Seop Sim, Jaedoo Go, Bumsun Lee, Soo-Jun Park · ETRI Journal · 2009
To match the requirements of heterogeneous mobile devices, video objects may be transcoded, which requires considerable CPU resources. Alternatively, multiple versions of the same video may be stored on servers, but this requires a lot of disk space. We formulate the trade-off between the versions that are stored on disk and the need for transcoding. We propose an optimal solution to this formulation based on dynamic programming. Experiments show that our scheme allows up to 68% more clients to be admitted than conventional schemes when a reasonable amount of storage is available.